[Bug tree-optimization/123207] [16 Regression] Miscompare of 526.blender_r with -O3 on x86_64 since r16-6133-gca8d97f8cb8d28

sjames at gcc dot gnu.org gcc-bugzilla@gcc.gnu.org
Mon Dec 22 14:37:16 GMT 2025


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123207

--- Comment #7 from Sam James <sjames at gcc dot gnu.org> ---
(In reply to Filip Kastl from comment #2)
> (In reply to Richard Biener from comment #1)
> > Does dropping -ffast-math work?
> 
> Just tried it (on Zen5).  -Ofast -fno-fast-math -march=native -flto still
> results in a miscompare.

Just to double check: is this with Victor's fix (r16-6306-g57acdcf3fb3ec8)?
Without checking, it'd be wrong-code.


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